Quote:
Originally Posted by MAKH 5
I just spoke with a BMW advisor recently at a dealership here in NY and he said BMW just denied someone a warranty repair who was having a transmission issue on a 23 m340 that they had been using a jb4 with. $9k repair.
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Quote:
Originally Posted by AM340iMiami
Yikes!
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Quote:
Originally Posted by Jnasratyar
Only if they plug into the ISTA, but that only happens when there’s coding related issues, but with them not knowing the problem idk how they’re gonna diagnose it without plugging in. Regardless though they won’t just void your warranty if they see you’ve used a jb4.
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It was the exhaust. Went to a place to have it tightened and now it’s back to normal. According to valvetronics, after a while when the system starts to heat up it gets loose and needs to be retightened